Adding Search & Delete presentation to repo

2020/April/22/README.md

@@ -10,4 +10,5 @@ Casey Ellis (Founder/Chairman/CTO @ BugCrowd);
 Costin Raiu (Director of Global Research and Analysis Team at Kaspersky);
 The Grugq (Moderator)
 ## Search & Delete: eDiscovery using EWS & Graph APIs
-Josh Rickard (Swimlane)
+Josh Rickard (Swimlane)
+- [Presentation Slides](https://github.com/MSAdministrator/search-and-delete-presentation)